"We were completely professional," Kartheiser said. "We never saw each other out. We never—it was nothing, it was just work."

However, lot of his co-starts were infact rooting for them.

"I did know he liked her from a very early point," Hamm said. "I was a supporter of that union." Weiner also commented on the couple, adding, "I told Vinnie that they would be great together. I was like, ‘Don't blow it!'"

He also told the show's writers that the two would get married. "Honestly, they're a really good match," Weiner continued. "They're both very down to earth, with a sense of responsibility and strong family ties. And they've been acting since before they can remember which makes for a very special personality. It's not just that I thought they would look cute together."

But, he said, with a laugh, "Even with all of Alexis's amazing qualities, I think that if she had not been such a good actress, he would not have been interested."